Learning Forum

[hakkeemnazar007]

Hello everyone,

I am currently working on a hydrofoil model using a NACA 63412 profile. I designed the geometry in Rhino 3D, then imported it into ANSYS SpaceClaim, and proceeded with the laminate definition in ACP (Pre) using shell elements for the foil surfaces.

After defining the plies and generating the ACP solid model, I am facing an issue:

• The top and bottom solid models are not properly connected
• There appears to be a gap/opening along the mid-plane region
• When transferred to Static Structural, the solid behaves as two separate bodies
• Under load application, the structure does not act as a single connected foil

My modeling workflow was:

1. NACA 63412 geometry created in Rhino 3D
2. Imported into SpaceClaim (STEP format)
3. Shared topology applied
4. ACP shell model created
5. Cutoff plane defined at mid-surface
6. Solid model generated using extrusion guides

However, during solid generation:

• I receive intersection and tetrahedron decomposition warnings
• Some bad elements are deleted automatically
• The final solid mesh shows separation along the mid-plane

As a result, the structure is not continuous when transferred to Static Structural.

I would appreciate guidance on:

• Proper cutoff plane definition for symmetric foil laminates
• Correct extrusion guide setup in ACP
• Best practices to ensure top and bottom solids merge into a single continuous body
• Whether this is a geometry tolerance issue from Rhino import
• Recommended solid model generation settings in ACP

I can provide the project files (.wbpj / ACP model / geometry) if required.

Thank you very much in advance for your help.

Kind regards
Hakkeem Nazar